W995
1230-1858 rev. 1
TROUBLESHOOTING
Microphone Problems
T
R
O
UBL
ESHOOT
ING
- Earphone Problems
START
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Continue with the
Microphone Problems TRS guide
Use Fault Trace SW and go to:
Audio and FM Radio
Audio Loop Test
Audio Input:
Mic1
Loop Mode:
Analog
Audio Output:
Loudspeaker
Apply Audio Loop
2.2 Volt DC at
MP 69 (L3100)
No
SL 5 Replace
N2000
SL 4 Escalate
Yes
Replace
B3100
Disconnect:
VBATT and DCIO/SEPI
Are
L3100, L3101, L3102
= Max 2.5 Ohm
SL 5 Replace
L3100, L3101 or
L3102
SL 4 Escalate
No
Yes
Microphone Problems
START
Step 1:
Replace Slider Flex Assy and retest the Phone
If successful claim Slider Flex Assy
If not go to Step 2.
Step 2:
Load ETS SW into the Phone
Use the TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Continue with the
Earphone Problems TRS guide
1:
Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Earphone
Yes
More than
400mV AC Pk-Pk
1 kHz signal at MP 105
(TP3104) and MP 109
(TP3105)
Replace
X4300
SL 5 Replace
N2000 or N2010
SL 4 Escalate
No
Earphone Problems
SEMC Troubleshooting Manual
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(125)